From the Rifleverse:

The Union of Colonial States

The Union of Colonial States Was formed as an alliance between  a triumverate of Colonal nations following the battle of Jacob's Rift, where five Earth League battleships and their attending craft were destroyed in spacedock at a minmal loss to a operation planned by the Outlander Association and executed with the assitance of the Amazonian Colonial Space Forces. This action forced the Earth League away from driving a wedge between the territories of the two states, and allowed for expanded cooperation. A number of corporations operation on the fringe of the League itself banded together for their own protection with the loss of those capital warships, and petitioned the Outlander Association for protection.

The benefits of a three-way partnership were obvious to all but the most dull foreign-policy analyst. While the ties may have been sound, the navy of the Colonial Union was not, being a hodgepodge of various corporate security vessels, attack ships, heavy cruisers, and disused Earth League warships. The efforts to organize this set of ships into a proper navy had been quite daunting, but it has acquired enough stability to defeat most attempts at raiding by opportunistic pirates. The Union fleet, however, does not have the sheer weight of battleships that the Earth League posesses,  The League itself is loath to attack this new interstellar alliance, instead focusing its efforts on pirate clans and other rogue human states.
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Part 1: Ships of the Line.

Belisarius-class Battleship.

Designed as a low-cost alternative to the aging and unreliable Avenger-class battleship, the vessel was found to be lacking due to its smaller hull-size and what some had called its "pre-dreadnought" armament. This was despite its more sophisticated weapons, reliable anti-fighter systems, heavy shields, and innovative battlesat technology. Unfortunately, the company had already produced two-dozen of these craft in anticipation of their acceptance by the Earth League, and so the vessels were sold off to another firm for decomissioning and scrapping. It was only two weeks later, however, that the company that was supposed to scrap the vessels handed turned to join the Union of Colonial states, and donated the capital ships to the Union itself. This company now provides maintenance and repairs of the Belisarius-class.

Belisarius-class PDN (1014)

Hull: 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
Engine: 3 2 1
Shields: 5 4 3 2 1

Damage track: Ha Eb H S H Q

Weapons:
A: Particle Impact cannon: AB AB ACE BDF (Range 15, 4+ 1/2/1 Re-rolls Penetration Dice, Extra hull damage)

B: Type 60 pulse cannons: AB AB ACE ACE BDF BDF (Range 9, 3+, 2/1/1, Re-rolls to-hit dice.)

Special Equipment: Hyperdrive [O] Armor Plating, Anti-fighter batteries [O], ECM [O], Security team [OOOOO OOOOO], Battle Sattellite [OOOOO], Mine [OOOOO]

Cunaxa-class battlecruiser

The  Cunaxa was the first capital ship built by a colonial state, constructed by the Amazonian Colonial alliance, a state founded by former female officers of the Earth laguie who had (properly) alleged gross mistreatment by ttheir male counterparts in the ELAF. The ship itself was built to deal out the same level of firepower as an Avenger: while it carried less guns, they did tend to be more accurate than those used by the primary battleships of the Earth league at the time. This ship is still a deadly combatant against vessels of any size, especially considering the advanced weapons technology posessed by the ACSF. The ship is unique among capital warships, as it carries a fighter bay with one squadron of fighters for its own defense. While it may posess less hielding than a battleship. it is supplimented by a point defense system: a series of quickfiring lasers to shoot down projectiles, and small missiles that spread beam-scattering material in the projected path of energy weapons.

Cunaxa-class Battlecruiser (695)

Hull: 13 12 11 10 9 8 7 6 5 4 3 2 1
Engine: 4 3 2 1
Shield: 4 3 2 1

Damage track: Ha Eb H S H Q

Weapons:
A: Heavy particle beam AB AB AB ABCD (Range 18, 3+, 1/2/2, Range-based DMG)

B: Tri-barrel pulsar gun AB AB AB ACE BDF (Range 6, 4+, 3/1/1, Re-rolls to-hit dice)

Special Equipment: Hyperdrive [O], Anti-fighter batteries [O], Point-defense system [O], Fighter Bay [O], Security team [OOOOO OOOOO]